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Structure Data of Free Polyatomic Molecules
133
MW
ClH3IN
Isotopic species
H314N · I35Cl
H314N · I37Cl
H315N · I35Cl
Ammonia – iodine chloride (1/1)
(weakly bound complex)
r0(Rcm) [Å]
3.279(2)
3.304(2)
3.272(2)
r0(N...I) [Å]
2.711(2)
2.714(2)
2.707(2)
θ0(αav) a) [deg]
15(10)
15(10)
15(10)
C3v
(effective symmetry class)
(large-amplitude motion)
NH3 · ICl
θ0(βav) a) [deg]
4(1)
4(1)
4(1)
The equilibrium geometry of the complex is one of C3v symmetry, with the nuclei in the order
H3N...ICl. The intermolecular stretching force constant is 30.4 N m–1, indicating that the
complex is strongly bound.
a
) See figure for the definition. Average values.
Waclawik, E.R., Legon, A.C.: Phys. Chem. Chem. Phys. 1 (1999) 4695.
Landolt-Börnstein
New Series II/28A